Home / 7,840.36-11,760.42-3,160.25

Finding the Fourth Proportional to 7,840.36, 11,760.42 and 3,160.25

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Solution

The fourth proportional to 7,840.36, 11,760.42 and 3,160.25 is: 4,740.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.36 : 11,760.42 = 3,160.25 : x
  2. Step 2: Convert to fraction form
    7,840.36/11,760.42 = 3,160.25/x
  3. Step 3: Cross multiply
    7,840.36x = 11,760.42 × 3,160.25
  4. Step 4: Simplify right side
    7,840.36x = 37,165,864.46
  5. Step 5: Solve for x
    x = 37,165,864.46/7,840.36
  6. Step 6: Final answer
    x = 4,740.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.